<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
/*p{
    color: red;
}*/
/*.one{
    color: yellow;
}*/
/*#two{
    color: green;
}*/
/*p:hover{
    color: blue;
}*/
p,h1,div{
    color:red;
}

    </style>
    
</head>
<body>
    <p class="one" id="two">hello world</p>
    <h1>h1</h1>
    <div>div</div>
</body>
</html>